the superintendent of a school district decided to collect data on the effectiveness of two methods of teaching reading: the whole word approach and phonics. She randomly assigned half of the elementary schools (n=10) to the whole world approach for teaching reading and half to phonics (n=10). The results are as follows: Whole world m= 77.3 ss= 336.1 Phonics m= 89 ss= 266 1. Use a two tailed test with alpha= .01 to determine whether these data are sufficient to conclude that there is a significant difference between using the whole word and the phonics approach to reading. 2. Compute cohen's d to measure the size of the effect. 3. Which method would you reccomend that the school district adopt for teaching reading and why?
the superintendent of a school district decided to collect data on the effectiveness of two methods of teaching reading: the whole word approach and phonics. She randomly assigned half of the elementary schools (n=10) to the whole world approach for teaching reading and half to phonics (n=10). The results are as follows:
Whole world
m= 77.3
ss= 336.1
Phonics
m= 89
ss= 266
1. Use a two tailed test with alpha= .01 to determine whether these data are sufficient to conclude that there is a significant difference between using the whole word and the phonics approach to reading.
2. Compute cohen's d to measure the size of the effect.
3. Which method would you reccomend that the school district adopt for teaching reading and why?
The provided information is:
1).
Here, it is required to conduct the hypothesis test, to test whether there is a significant difference between using the whole word and the phonics approach to reading.
To test the hypothesis using a two-sample t-test assuming that variance is unequal because the population standard deviation is unknown.
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